US3134094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spin resonant transducer
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1963-07-02
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Granted: 1964-05-19
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Expires: 1983-07-02
Abstract
No abstract record available.
Inventors
- 👤 Harold C Anderson
- 👤 Alfred E Shanholtzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:37
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/08; G01R29/0864; G01R29/0878; G11; G11B; G11B11/00; G11B9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A RADIO FREQUENCY TRANSDUCER FOR ELECTRICAL WAVES IN THE MICROWAVE REGION COMPRISING: A MICROWAVE RESONANT CAVITY HAVING MEANS TO RECEIVE THE RADIO WAVE, SAID CAVITY COMPRISING A RECTANGULARLY SHAPED WAVEGUIDE SECTION HAVING BROAD AND NARROW WALLS, AND A BASE MEMBER CLOSING ONE END OF THE GUIDE, SAID BASE MEMBER HAVING A CENTRAL GROOVE ALONG ITS LENGTH TO DEFINE A GUIDEWAY FOR A RECORDING TAPE BEING DIRECTED THROUGH THE CAVITY, A STYLUS CONTAINING A SPIN RESONANT MATERIAL BEING DISPOSED IN THE GROOVE AT AN ACUTE ANGLE ANGLE THE LENGTH OF THE GROOVE, MAGNET MEANS EXTERNAL OF THE CAVITY AND DIRECTING A MAGNETIC FLUX INTO THE CAVITY TO ILLUMINATE THE STYLUS, SAID MAGNET MEANS PRODUCING A NONHOMOGENEOUS MAGNETIC FIELD TO ENERGIZE DIFFERENT POSITIONS ALONG THE LENGTH OF THE STYLUS WITH A DIFFERENT INTENSITY MAGNETIC FIELD.
Claim 2
Dependent Claim
133 words
A RADIO FREQUENCY TRANSDUCER FOR ELECTRICAL WAVES IN THE MICROWAVE REGION COMPRISING: A MICROWAVE RESONANT CAVITY HAVING MEANS TO RECEIVE THE RADIO WAVE, SAID CAVITY COMPRISING A RECTANGULARLY SHAPED WAVEGUIDE SECTION HAVING BROAD AND NARROW WALLS, AND A BASE MEMBER CLOSING ONE END OF THE GUIDE, SAID BASE MEMBER HAVING A CENTRAL GROOVE ALONG ITS LENGTH TO DEFINE A GUIDEWAY FOR A RECORDING TAPE BEING DIRECTED THROUGH THE CAVITY, A STYLUS CONTAINING A SPIN RESONANT MATERIAL BEING DISPOSED IN THE GROOVE AT AN ACUTE ANGLE ANGLE THE LENGTH OF THE GROOVE, MAGNET MEANS EXTERNAL OF THE CAVITY AND DIRECTING A MAGNETIC FLUX INTO THE CAVITY TO ILLUMINATE THE STYLUS, SAID MAGNET MEANS PRODUCING A NONHOMOGENEOUS MAGNETIC FIELD TO ENERGIZE DIFFERENT POSITIONS ALONG THE LENGTH OF THE STYLUS WITH A DIFFERENT INTENSITY MAGNETIC FIELD.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |